__May 5th,2017,the C919 took off successfully for the first time at Shanghai International Airport.( )
A. |
On |
B. |
In |
C. |
At |
D. |
Of |
__May 5th,2017,the C919 took off successfully for the first time at Shanghai International Airport.( )
A. |
On |
B. |
In |
C. |
At |
D. |
Of |
试题篮
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